Electrospun Poly(vinyl alcohol) Nanofibres with Biocidal Additives for Application in Filter Media, 1–Properties Affecting Fibre Morphology and Characterisation

Gule, Nonjabulo P.; Kwaadsteniet, Michéle de; Cloete, T.E.; Klumperman, Bert

doi:10.1002/mame.201100275

Cited by 16 publications

(7 citation statements)

References 20 publications

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“…Three peaks at 3313, 2942 and 2907 cm −1 were clearly observed for all the nanofibers (Fig. 5c), corresponding to O-H vibration and C-H stretching in the PVA coating layer 36 . The FT-IR spectrum of PVDF/GO/OBC@PVA nanofibers showed clear additional peaks at 1182 and 1143 cm −1 , which were attributed to C-O stretching and C-C-C stretching in the PVA coating layer.…”

Section: Resultsmentioning

confidence: 93%

Quaternized Amphiphilic Block Copolymers/Graphene Oxide and a Poly(vinyl alcohol) Coating Layer on Graphene Oxide/Poly(vinylidene fluoride) Electrospun Nanofibers for Superhydrophilic and Antibacterial Properties

Park

Cho

Han

et al. 2019

Sci Rep

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Poly(vinylidene fluoride) (PVDF) is common polymer for electrospinning, however, its high hydrophobicity is a major drawback, which cause fouling. To introduce hydrophilicity and antibacterial activity, quaternary ammonium-functionalized amphiphilic diblock copolymers were synthesized and blended with a PVDF/graphene oxide (GO) solution, then, electrospun and coated with a hydrophilic polymer, poly(vinyl alcohol) (PVA). The amphiphilic block copolymer, consisting of a hydrophobic poly(methyl methacrylate) block and a hydrophilic poly[N,N-2-(dimethylamino)-ethyl methacrylate) block (PMMA-b-PDMAEMA), was synthesized. Polymeric quaternary ammonium with three different alkyl chain lengths (C2, C4, and C8) were successfully introduced to obtain as q-PMMA-b-PDMAEMA. The q-PMMA-b-PDMAEMA in the nanofiber matrix was confirmed by C=O bands (1734 cm−1) in the Fourier transform infrared spectra. Nano-sized spherical protuberances were distributed on the surface as revealed by field emission scanning and transmission electron microscopies. The PVDF/GO/q-PMMA-b-PDMAEMA@PVA nanofibers has superhydrophilic properties (water contact angle = 0–20°) and the pure water flux was generally improved by increasing the alkyl chain length. When introducing the longest alkyl chain (C8,OBC), the total fouling ratio was the lowest (49.99%) and the bacteria removal capacities after 60 min were the highest for both Escherichia coli (4.2 × 105 CFU/mg) and Staphylococcus aureus (6.1 × 105 CFU/mg) via growth inhibition and cytoplasmic membrane damage.

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Section: Resultsmentioning

confidence: 93%

Quaternized Amphiphilic Block Copolymers/Graphene Oxide and a Poly(vinyl alcohol) Coating Layer on Graphene Oxide/Poly(vinylidene fluoride) Electrospun Nanofibers for Superhydrophilic and Antibacterial Properties

Park

Cho

Han

et al. 2019

Sci Rep

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“…The pore size and pore size distribution of membranes are very important factors which can influence the quality of membranes, such as the air and water permeability and retention rate . The pore size and pore size distribution of the membranes were determined by a pore size analyzer (3H‐2000PB, BeShiDe Inc., China) using the bubble‐point method.…”

Section: Methodsmentioning

confidence: 99%

Water filtration properties of novel composite membranes combining solution electrospinning and needleless melt electrospinning methods

Yang

et al. 2014

J of Applied Polymer Sci

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New composite polyvinyl alcohol (PVA)/polypropylene (PP) membranes were prepared by combining both solution electrospinning and melt electrospinning methods. Self-designed and made needleless melt electrospinning device was used to fabricate PP membranes which acted as the support layer. PVA membrane on the surface was fabricated via solution electrospinning. The electrospun PVA/PP composite membranes were characterized by the pore size distribution, pure water flux, and rejection ratio, then compared with general composite membranes. Characterizations revealed that the fiber diameter of solution electrospun PVA membrane and melt electrospun PP membrane were 0.171 6 0.027 and 2.24 6 0.33 lm, respectively, and the average pore size was 0.832 lm and 27.29 lm, which was much smaller than the nonwoven membrane. The rejection ratio to the 500 nm particles of the PVA/PP composite membrane could reach more than 96%, which was much larger than that of the PVA/non-woven substrate of 90%, and the melt electrospun PP membrane of 80%, and still maintained high permeate flux of 32,346 L/m 2 h under the pressure of 0.24 bar. This approach of compositing the solution electrospun membranes and melt electrospun membranes could be useful in designing novel microfiltration membrane owning both higher flux and higher rejection ratio.

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“…Particularly, three-dimensional (3D) filtration modeling and particle capture theoretical predictions based on electrospun nanofiber structure and filtration performances are proposed. Additionally, researches have also made successful attempts for functional material-polymer composite filtration membranes [24][25][26]. Their functionalization can offer exceptional properties in composite filter media.…”

Section: Normal-temperature Filtermentioning

confidence: 99%

“…The excellent chemical resistance, physical properties, and complete biodegradability of PVA resins have led to their broad practical applications [25,49,50]. Thus, engineering PVA into nanomaterials has attracted increasing attentions during the past several years.…”

Section: Poly(vinyl Alcohol) (Pva)mentioning

confidence: 99%

Electrospun Nanofibers for Air Filtration

Wang

Mao

Zhang

et al. 2014

Nanostructure Science and Technology

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Fine particle pollution resulting from the rapid urbanization and industrialization is one of the most serious sources of air pollution. In response to the recognized threats of fine particles to the environment and human bodies, the pursuit of novel, high-performance, energy saving, and environmentally friendly filter medium has gained great interest in recent years. Electrospun nanofibrous membranes, as one of the utmost promising and versatile filter media for fine particle filtration, possess several fascinating features such as remarkable specific surface area, high open porosity, and interconnected porous structure. More significantly, electrospun nanofiber-based filter media are expected to have extremely high filtration efficiency for fine particle and relatively low pressure drop due to the unique structure of electrospun nanofibers. In this chapter, we summarize the recent progress in the development of electrospun nanofibrous membranes (e.g., organic, hybrid, inorganic) for fine particle filtration, describe the types of nanofibrous materials that have been developed, and discuss their structure variables and particle filtration performance in detail. This chapter may trigger the development of advanced nanofibrous filter media for fine particle emissions from anthropogenic polluted atmosphere.

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Electrospun Poly(vinyl alcohol) Nanofibres with Biocidal Additives for Application in Filter Media, 1–Properties Affecting Fibre Morphology and Characterisation

Cited by 16 publications

References 20 publications

Quaternized Amphiphilic Block Copolymers/Graphene Oxide and a Poly(vinyl alcohol) Coating Layer on Graphene Oxide/Poly(vinylidene fluoride) Electrospun Nanofibers for Superhydrophilic and Antibacterial Properties

Quaternized Amphiphilic Block Copolymers/Graphene Oxide and a Poly(vinyl alcohol) Coating Layer on Graphene Oxide/Poly(vinylidene fluoride) Electrospun Nanofibers for Superhydrophilic and Antibacterial Properties

Water filtration properties of novel composite membranes combining solution electrospinning and needleless melt electrospinning methods

Electrospun Nanofibers for Air Filtration

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